Deep Dwarf Rush
In dwarven socities, Guildmasters are the heads of powerful associations called guilds. While dwarves also have individual companies with specific concerns, guilds are groups of companies and powerful individuals whose primary concern is wielding political influence through consolidation of support among those with similar goals.
In some deeps, particular Guildmasters enjoy as much or more power than the Thane. However, since much of a Guildmaster’s time is spent managing their myriad constituents as well as competing against other guilds for influence, they do not always aspire to personal power.